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Reason: This was only ever referred to by Tinkerbell, which was retired.
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This Script creates 8 Copy on write devices and sets up vblade servers hosting the devices. These devices are backed by the original image specified. If the system is shutdown, or interupted, the script can be run again and all changes will be preserved. To reset any changes, shut down the system, delete the file $FILE.cow.$loopnumber. and rerun the script. This script can be modified to iterate over a list of mac addresses and bind each vblade a specific mac address.
modprobe dm_mod modprobe dm_mirror modprobe dm_snapshot IMAGE_FILE=$1 img_loop_dev=`losetup -f` losetup -v -f $IMAGE_FILE cow_size=`blockdev --getsize $img_loop_dev` echo $cow_size chunk_size=64 FILE=$IMAGE_FILE for loopnumber in 0 1 2 3 4 5 6 7 do dd if=/dev/zero of=$FILE.cow.$loopnumber bs=512 count=0 seek=$cow_size COWLOOPDEV=`losetup -f` losetup -v -f $FILE.cow.$loopnumber echo "0 $cow_size snapshot $img_loop_dev $COWLOOPDEV p $chunk_size" | dmsetup create $FILE.cow.$loopnumber vblade 0 $loopnumber eth0 /dev/mapper/$FILE.cow.$loopnumber & echo $COWLOOPDEV is attached to $FILE.cow.$loopnumber done losetup -a dmsetup table